Alternatives to Letterbox

Secure your company’s communications with Proton Mail — the business email solution trusted by over 50,000 organizations. With end-to-end encryption built in, your internal and external communications stay confidential by default. Proton Mail helps your business meet GDPR, HIPAA, and other compliance standards, while giving you full control over your data under strong Swiss privacy laws. Empower your team with encrypted email and calendar, support for your custom email domains, professional branding, and simple migration from providers like Google Workspace or Microsoft 365 — no IT team required.

SalaX Secure Mail provides a user-friendly and robust email encryption solution that seamlessly integrates with your current email services, safeguarding sensitive communications. It authenticates all users—both senders and receivers—through a variety of methods such as strong bank ID authentication, SMS and email OTPs, and password protection. The system enhances security with features like audit trails and detailed reporting options. It ensures that your communications are protected via end-to-end encryption, maintaining confidentiality from sender to recipient. Additionally, Secure Mail is compatible with multiple email security protocols, including DMARC, DKIM, SPF, and S/MIME-based encryption. You maintain control over your data with flexible deployment options available in both cloud and on-premises environments. The solution also provides numerous configuration options, including APIs and web interfaces, allowing for easy customization. You can classify sensitive data and modify security levels to align with your organizational policies. Moreover, it guarantees compliance with data privacy laws and regulations such as GDPR, delivering government-grade security measures for your peace of mind. By choosing Secure Mail, you enhance the overall security of your email communications significantly.

CounterMail is an online email service that prioritizes security and user-friendliness, aiming to deliver optimal privacy without overwhelming users with complicated features. You can easily access your email account from any location around the globe at any time. Your account remains anonymous and always encrypted, ensuring a high level of confidentiality. The encryption process employed by CounterMail operates automatically and seamlessly, without requiring any advanced technical knowledge. If you find services like Hotmail or Gmail user-friendly, you'll likely feel the same about CounterMail's secure email platform! It utilizes a robust encryption standard known as OpenPGP, employing 4096-bit encryption keys to safeguard your information. Based on publicly available knowledge, there appears to be no current method capable of compromising OpenPGP's encryption through cryptographic or computational approaches, offering users peace of mind regarding their data security. Moreover, this commitment to privacy makes CounterMail a compelling choice for anyone concerned about their online communications.

ZixMail, a desktop email encryption service, provides users with high levels of security in email communications. It is an easy-to use service that allows users to encrypt and decrypt email attachments and emails with just one click. ZixMail, a unique Email Encryption solution, is trusted by top figures in Government, Healthcare, Legal, and Financial. It focuses on both the sender as well as the receiver experience. ZixMail combines best-in-class encryption technology with simple interfaces to meet your organization's email security requirements.

Mailpile aims to restore the privacy of online communication, striving to liberate our personal interactions from corporate and governmental intrusion in the digital age. This initiative focuses on safeguarding our conversations from exploitation and reclaiming control over our email experience. With its robust search and tagging features, Mailpile efficiently manages your inbox, whether you have a handful of messages or an overwhelming number of them. Designed for speed and responsiveness, it performs exceptionally well even on slower devices and remains functional without an Internet connection. The integration of OpenPGP signatures and encryption is fundamental to Mailpile's framework, ensuring that securing your emails is straightforward and intuitive. In a world where many web-mail services substitute spam with their own ads, Mailpile stands out by providing an ad-free environment for its users. Additionally, Mailpile emphasizes user privacy and control, allowing individuals to communicate freely without the looming presence of advertising distractions.

Sending and receiving HIPAA-compliant emails has never been so simple and cost-effective. With MailHippo, you can securely transmit sensitive information and attachments without any complicated setup or configurations; just register and start using it immediately. The platform employs end-to-end encryption to ensure that your emails and attachments remain protected, both while being sent and stored. Additionally, MailHippo seamlessly integrates with your existing email address and works with any email service provider. It is optimized for use on smartphones and tablets, making it highly convenient. You also receive a special link that allows you to collect secure emails from anyone easily. Take advantage of our limited-time Beta program to access our secure encrypted email messaging service for FREE and experience the peace of mind that comes with HIPAA compliance!

Atomic Mail is a privacy-focused email hosting service that prioritizes user security while delivering a seamless email experience. It offers a range of features including the ability to create multiple email aliases for enhanced privacy, ensuring a spam-free environment with no advertisements, and providing email password protection. Additionally, Atomic Mail incorporates end-to-end encryption, allowing only you and your designated recipient to access the contents of your messages. The service guarantees zero access encryption, meaning Atomic Mail itself cannot view your emails, thus upholding your privacy. Furthermore, account recovery is simplified through the use of a unique seed phrase, enabling you to regain access to your account without sacrificing security. This combination of features makes Atomic Mail a reliable choice for individuals who value both privacy and ease of use in their email communications.

Skiff is an end-to-end private encrypted workspace that integrates with Mail, Calendar and Pages products to provide a completely secure environment for communication and collaboration. Skiff products have been designed with privacy and security in mind. All apps are built using end-to-end (E2EE) encryption, so you will never have to share sensitive data or private keys. Only you have access to the content of emails at all times. Free tiers are available in abundance Enjoy 10 GB free storage for all your emails, documents, attachments and notes. Create up to four free email aliases in order to protect your identity. Open-source and audited Skiff Mail is an open-source product that uses open-source cryptography and undergoes regular external security audits. You can find our whitepaper and source code at skiff.com. No trackers or Ads Upgrades can be made using crypto payments in a variety of currencies. - Your information is never sold, shared, or collected.

Much of our time is consumed by managing emails, frequently focusing on topics related to innovation and productivity. At some point, the essence of effective communication became obscured. In response, we embarked on a mission to create the ultimate mobile mail experience. Stay organized with distinct categories, as the app’s assistant conveniently sorts messages for you, simplifying your search process. Just as peanut butter pairs perfectly with jelly, some features naturally complement one another. Receive timely alerts regarding changes to your flight status, including any delays, cancellations, or gate alterations. Keep an eye on price drops for recent purchases with notifications that help you save money. Use the assistant to access weather forecasts for your upcoming travels, ensuring you pack appropriately. Get real-time notifications when your packages are on their way, and easily check the details through the assistant. Tired of newsletters and mailing lists that clutter your inbox? The app can help you identify those you may wish to unsubscribe from. Additionally, the assistant provides quick access to directions for your next flight or hotel, allowing for effortless navigation with a single tap. By integrating these features, we aim to enhance your overall email management experience.

Safeguard the confidentiality of your electronic communications by utilizing gpg4o®, an innovative solution crafted by Giegerich & Partner, which leverages OpenPGP—one of the most trusted and widely adopted encryption methods globally. Designed for both individual and corporate users, gpg4o® ensures that your emails remain private through robust encryption capabilities. This seamless integration with Microsoft® Outlook® 2010, 2013, 2016, and 2019 allows you to enhance your email security effortlessly. The installation process is straightforward, and the user-friendly interface makes it easy to maintain email privacy. Additionally, with ongoing product updates, gpg4o® continuously provides the latest features to bolster security and improve overall user experience, ensuring that your sensitive information is always protected. In a world where email breaches are common, taking proactive measures to secure your correspondence is more important than ever.

Aspida Mail was designed to prioritize ease of use. We understand the necessity for you to maintain your regular business operations effortlessly. The installation process for Aspida Mail is straightforward and compatible with any device that supports IMAP. Furthermore, Aspida ensures that your communications are secure, as it is an encrypted email service compliant with HIPAA regulations. With this in mind, you can focus on your work while enjoying peace of mind regarding your email security.

25% of the top 100 German companies with the highest turnover choose Zertificon's solutions. We make Enterprise Email Encryption effortless for secure communications with anyone, anywhere, with our Z1 SecureMail Gateway solution. Your entire organization encrypts and decrypts, just as well manages and verifies email signatures smoothly in the background. Z1 SecureMail Gateway requires very little maintenance. Furthermore, the browser-based admin interface does not call for any special skills. Keys are managed automatically, and security policies are centrally enforced. Integration into your cloud or on-premises email infrastructure is quick and straightforward. Your business and workflows are uninterrupted – no employee training is required, and recipients get a frictionless experience. Encryption is centrally customizable and proofed against human error with Z1 SecureMail Gateway. You can quickly establish and maintain compliance and the highest levels of security. You also own your encryption keys and get German-engineered data sovereignty with no backdoors.

Mailfence is an encrypted email provider that uses OpenPGP-based encryption and digital signatures. Mailfence offers a variety of features that allow for collaboration without compromising security or convenience. Mailfence documents allows you to securely store and edit documents. You can also share documents with your team by pressing a button. Mailfence calendar will help you keep track of all your tasks, meetings, events, and other important information. Mailfence contacts will save your contacts and allow you to create mailing lists to maximize efficiency. Mailfence was designed to be fully interoperable. This means that you can sync Mailfence with any service. Mailfence offers fully customizable whitelabel versions for its Mailfence interface. Mailfence donates 15% from PRO subscriptions to IFF or EDRI to support the fight for Online privacy.

TouchMail is an innovative email application that consolidates all your accounts into a single interface featuring a vibrant and visually appealing layout, designed to enhance your email management efficiency. This versatile app operates seamlessly with both touchscreens and traditional keyboard-and-mouse setups. Users can easily assign color codes to messages based on the sender, allowing for quick visual identification and streamlined browsing. With just a few taps, you can reduce clutter and efficiently organize emails from your most frequent contacts. It has earned its reputation as the top-rated email application for Windows 10, boasting over 1.5 million downloads and recognition as one of Microsoft's "Essential Windows 10 Apps." Whether using a touchscreen or swiftly navigating with a mouse or touchpad, TouchMail provides the fastest and simplest means to access important messages while discarding unnecessary ones across various services, including Gmail, Outlook.com, Yahoo Mail, iCloud, AOL, Office 365, and numerous IMAP accounts. This app transforms your email experience into a colorful and interactive inbox, allowing you to engage with your messages in whichever way you prefer—via touch, mouse, keyboard, or stylus—while enjoying rich visual elements and customizable message tiles. TouchMail not only enhances productivity but also turns email management into an enjoyable process.

An efficient way to oversee multiple email accounts seamlessly is essential. If your email provider lacks push notifications, myMail has you covered. Tired of being disturbed by late-night emails or having your barbecue interrupted? You can choose when to receive those notifications, putting you in control. myMail enhances your inbox with profile pictures of your contacts, allowing you to instantly recognize who is reaching out. Additionally, it features icons from popular platforms for quick sender identification. For friends without avatars, no worries—myMail simply displays the initial of their name. Ultimately, myMail excels at what it’s designed to do: streamline your email management effectively, ensuring you never miss an important message. With traffic compression technology, your emails arrive in your inbox rapidly, allowing you to save your data for other activities, such as enjoying that entertaining video. This app maintains impressive speed even as your collection of messages and contacts expands significantly. Plus, myMail's user-friendly interface makes navigating your email a breeze, enhancing your overall experience.

Ensure data privacy compliance effortlessly with PBHS Secure Mail, a robust HIPAA-compliant encrypted messaging platform designed for healthcare professionals such as doctors, dentists, and hospitals. Enjoy the convenience of not having to install, configure, or maintain any software, as PBHS Secure Mail is accessible from any device and location. Sharing important documents, radiographs, CT scans, and messages is straightforward, with everything organized for easy access by all team members involved in a case. Getting started is hassle-free; simply log in using your ADA Membership ID. Additionally, our optional Outlook Plug-in allows seamless sending and receiving of messages directly through Microsoft Outlook on your computer, ensuring that treatment letters and private communications from your practice management software are encrypted. Moreover, radiographs sent from your digital x-ray systems to Outlook are also protected. You can continue your usual email practices with colleagues and patients without compromising HIPAA compliance, allowing for a smooth transition to secure communications. This way, you can focus on providing quality care while maintaining the highest standards of data security.

Amazon WorkMail is a secure, managed email and calendar solution designed for businesses, offering compatibility with various desktop and mobile email clients. Users can effortlessly access their emails, contacts, and calendars via their preferred applications, including Microsoft Outlook, native email apps for iOS and Android, any IMAP-compatible client, or through a web interface. Additionally, Amazon WorkMail can be integrated with existing corporate directories, allows for email journaling to fulfill compliance obligations, and provides control over data encryption keys and storage locations. The service also supports interoperability with Microsoft Exchange Server and enables programmatic management of users, groups, and resources through the Amazon WorkMail SDK. With straightforward pricing set at $4 per user monthly, each account includes a generous 50GB of storage, making it an economical choice for businesses of all sizes. This combination of features ensures that organizations can maintain secure communication while leveraging their existing infrastructure.

Vivaldi Mail is an integrated email client that resides directly within your web browser, allowing for seamless management of emails from various accounts, mailing lists, and feeds all in one consolidated inbox. It maintains a comprehensive database of your messages, labels, filters, and searches, forming the foundation of its robust email functionalities. All emails from your different accounts are indexed for offline searchability, making it a practical solution for users. Having an email client embedded in your browser is a logical choice that enhances productivity. Users can easily compose messages in new tabs, manage multiple emails simultaneously, and take advantage of Vivaldi’s extensive tab functionalities. Within Vivaldi Mail, two counters are displayed next to your folders: 'Unseen' indicates new emails that you have yet to view, while 'Unread' signifies emails you have opened but not yet addressed. To enhance efficiency, you can utilize customizable Keyboard Shortcuts for quicker navigation through your emails. Additionally, the Back and Forward buttons allow you to easily navigate through your email history and views as you work, streamlining your experience even further. This integrated approach not only simplifies email management but also ensures that you stay organized and productive in your communication tasks.

The QQmail application offers a superb email experience along with immediate notifications for new messages. You can efficiently check your QQ emails on an Android device, receiving notifications as soon as messages arrive. Furthermore, you can easily send pictures and files directly from your phone using QQmail, and it allows you to preview attachments online or with various apps on your device. The app also simplifies email management by enabling you to search through all or specific folders, making it easy to organize your inbox, group-mail folder, personal folders, and other POP account folders. Additionally, users can access their enterprise email accounts seamlessly, while ensuring that data is synchronized between their mobile devices and computers for optimal efficiency. Overall, QQmail enhances your email management and communication experience significantly.

StartMail offers secure and private email services that prioritize your privacy. You can generate disposable email addresses whenever you need to protect your personal inbox from unwanted spam. We believe in privacy as a basic human right, and StartMail makes it easy to safeguard yours. With just one click, you can send password-encrypted messages, even to recipients who don’t use encryption. . Our service follows strict Dutch privacy regulations, which are among the most robust globally, and aligns with European privacy standards. For businesses, we offer custom email addresses for your own domains. Best of all, there’s no software to install—setup is simple and takes just minutes.

K-9 Mail caters to both beginners and experienced users, providing a wide array of features suitable for everyone. It includes a customizable debug logging option that users can enable to assist in troubleshooting issues and errors. As an open-source project focused on privacy, we intentionally avoid implementing a continuous logging system that would send all device activity to a central server. Although such a feature could simplify problem resolution, it would involve significant server hosting costs and jeopardize user privacy. The significance of communication security continues to grow, and K-9 Mail is committed to delivering user-friendly email security in various ways, ensuring both secure access to email servers and the protection of the emails themselves. Ultimately, our priority is to empower users with tools that not only enhance functionality but also safeguard their information.

Hushmail adds encryption to your email, web forms, and e-signatures to protect your clients. It is secure, HIPAA compliant, and trusted worldwide by healthcare professionals. Hushmail is simple to set up and use. You can send your first encrypted email today and create a secure online intake form within minutes. Hushmail works exactly like regular email accounts, but has additional security features to protect your data. You can send and receive encrypted emails via the web and iPhone. You can access your account via Outlook, Apple Mail, or your Android smartphone. You can easily move your forms online in a matter of minutes. Hush™ Secure Forms is a secure alternative to traditional paper forms and includes instant online signing for your most important digital forms. It's easier than ever to switch from pen and paper to e-signatures.

Our email service, which complies with HIPAA regulations, allows you to access your emails, contacts, calendars, and files from any location at any time. Enhance your productivity by securely collaborating with colleagues, clients, and vendors. Cut costs by eliminating the need for additional licenses, backups, or antivirus software for your email system. Ensure data security by utilizing hosted email services in highly secure data centers equipped with advanced firewall and antivirus technologies. Reduce risk by safeguarding against both accidental and deliberate email deletions by users. This comprehensive approach not only streamlines communication but also fortifies your organization’s data integrity.

It is now easier than ever to send and receive digitally signed encrypted emails. The Secure E-Mail Gateway (SEPPmail) with its patented GINA procedure for spontaneous encrypted, SMEs as well as large corporations can secure all e-mail communications at the highest level. It requires minimal effort and is easy to use for both sender and receiver. SEPPmail's comprehensive Secure Email solution sets new standards in secure, GDPR-compliant email communication. SEPPmail is a world-class email encryption and signature solution. It includes all the features necessary to protect confidential data via email, ensure authenticity of the sender, and ensure confidentiality and integrity of the message. The modular design of the secure email gateway solution allows it to be customized to meet customer needs and can be easily expanded.

BlueMail, developed by Blix, is a free and elegantly crafted email application that allows users to manage countless email accounts from different providers seamlessly, featuring intelligent push notifications and group emailing options, while also offering extensive personalization across all accounts. This app connects directly to your mail server, serving as an excellent alternative to standard email applications. With numerous visual and functional customizations, including swipe actions, menus, action bars, buttons, and a variety of colors and themes, BlueMail equips teams with robust features. You can choose from various styles, whether you prefer vibrant pink or calming blue. Available on platforms such as Windows, Mac, Linux, Android, iOS, and Amazon, BlueMail caters to diverse user needs. The unique People Mode allows for a streamlined focus on emails from individuals, providing a simplified experience at the touch of a button. Additionally, the navigation picker facilitates easy access to any account type, whether it be IMAP, Exchange, or POP3, and each account is identifiable by a distinct service provider avatar, enhancing user experience and organization.

Email encryption is crucial for safeguarding communications, as most emails are transmitted in unencrypted plain text, which exposes their content to anyone who can access the data stream. This lack of security is often unacceptable for businesses, organizations, and institutions, and could potentially breach relevant legal requirements. To enhance security and foster trust in communications, CipherMail serves as a central mail transfer agent (MTA) operating on a “store and forward” model. It temporarily stores incoming emails from both internal and external sources until they are encrypted or decrypted, enabling seamless forwarding to the recipient without requiring any modifications to the email client and working in conjunction with any SMTP server. Email encryption methods supported by CipherMail include S/MIME, PGP, or even embedding within a PDF file, and can be initiated based on specific triggers, such as keywords in the subject line. Additionally, CipherMail is equipped with a Data Leak Prevention (DLP) module to provide further protection against unauthorized data exposure. This comprehensive approach to email security not only protects sensitive information but also reinforces the integrity of electronic communications across various platforms.

SmarterMail is the ideal Microsoft Exchange alternative. First, it's the only business email server on the market that offers native support for the protocols that power Exchange: MAPI, EWS, and EAS. It does this without the need for any additional software or plug-ins for Microsoft Outlook or other clients -- desktop and mobile! Best of all, it offers all of the features of Exchange, but at a FRACTION of the cost. In addition, features like audio and video group chat, and Online Meetings for team meetings and group collaboration are included at no extra charge. It's designed to provide the functionality businesses need, without sacrificing secure, reliable access to business, and personal, communication.

PerfectMail boasts an impressive filter accuracy rate of over 99%, with fewer than 0.1% of legitimate emails mistakenly marked as spam. It intelligently adapts to understand the communication habits of its users and their regular contacts, ensuring that important messages are never blocked. The only instances where PerfectMail may face challenges are with emails from unfamiliar senders, which minimizes the risks commonly associated with spam filtering. In contrast to traditional spam filters that operate by receiving, queuing, filtering, and then delivering emails, often resulting in delays and unnoticed blocks of legitimate messages, PerfectMail employs a real-time filtering approach. This innovative method allows it to assess messages as they come in, immediately notifying senders if their emails are being blocked. Additionally, PerfectMail's antispam engine is developed in C, recognized as the fastest programming language globally, further enhancing its performance. This combination of real-time processing and rapid coding ensures that users experience a seamless email communication environment.

Elevate your efficiency and enhance your email communication with Mailspring, the premier email client compatible with Mac, Linux, and Windows systems. It supports multiple accounts, including IMAP and Office 365, and features touch and gesture controls, advanced shortcuts, rapid search capabilities, the option to undo sent messages, a unified inbox, read receipts, link tracking, and much more, all while offering themes and layouts like dark mode and being available in nine different languages. Mailspring's indexing capability allows you to use sophisticated, Gmail-like search queries to sift through message contents across all linked accounts, ensuring that no email ever goes missing. Gain insights about your audience, send timely follow-ups, and transform clicks and opens into useful information. Mailspring Pro serves as your indispensable email assistant for both sales and business, unlocking additional features that go beyond the limitations of the free version. With Mailspring Pro, you can snooze emails, schedule reminders, and send messages at a later time without restrictions, empowering you to take charge of your inbox effectively. Moreover, recognizing and understanding your contacts and customers can significantly enhance your ability to engage with them.

RainLoop Webmail stands out as an excellent email solution due to its modest system requirements, solid performance, and straightforward installation and upgrade process, all while eliminating the need for a database. It features a modern user interface and fully supports IMAP and SMTP protocols with SSL and STARTTLS encryption. Users can benefit from Sieve scripts for filters and vacation messages, all while maintaining minimal resource consumption. The system allows direct access to the mail server, meaning emails are not stored locally on the web server, which enhances efficiency. Additionally, users can link multiple accounts to a primary account, and the platform supports simultaneous access to different accounts in various browser tabs. It also accommodates additional identities and includes an administrative panel for easy configuration of main settings. With an incredibly simple installation and update process, RainLoop integrates seamlessly with popular services like Facebook, Google, Twitter, and Dropbox, while also allowing for effective folder management and straightforward customization of its look and feel. The platform boasts a configurable multi-level caching system and the ability to extend its functionality through plugins that can be installed via the admin panel. Moreover, it ensures perfect rendering of complex HTML emails and allows users to utilize drag-and-drop features for emails and attachments, making it a versatile and user-friendly choice for managing email communications. Overall, RainLoop Webmail provides a comprehensive solution that combines efficiency, ease of use, and modern features.

Mail Pilot is an email application that prioritizes user privacy while assisting individuals in overcoming email overload and organizing their inboxes. Featuring a minimalist and focused design, it enables users to highlight their most crucial emails while categorizing others into a serene and manageable system. Supporting all standard IMAP email servers, Mail Pilot keeps your emails stored directly on your device, steering clear of any third-party servers. This native macOS app adopts an intuitive task-oriented method for handling emails, allowing users to turn emails into actionable tasks, schedule messages, and archive correspondence effortlessly. With a strong commitment to privacy and simplicity, the app’s design has garnered accolades for enhancing both the efficiency and aesthetic appeal of email management. Furthermore, Mail Pilot creates a secure setting for users to manage both personal and professional emails, empowering them to take control of their inboxes without experiencing stress. Ultimately, the app stands out as a practical solution for anyone seeking to regain control over their email communication.

Airmail 3 is a fully accessible email client tailored for iOS, macOS, and watchOS devices. With its email workflow optimized through a multitude of customization options, custom actions, and seamless integration with various applications and services, Airmail stands out as a versatile mail client. It is crafted to empower users to personalize their experience according to their individual needs. You can connect and integrate your preferred apps while creating unique actions that simplify your communication tasks. Whether you're working on a Mac, an iPad, an iPhone, or an Apple Watch, Airmail is readily available to assist you. Users can add a variety of email accounts, including Gmail, GSuite, iCloud Mail, Exchange, Office 365, Microsoft Outlook, IMAP, and POP3, making it adaptable for all types of users. The unified inbox feature allows you to view all your incoming emails from different accounts at once, and you have the option to exclude specific accounts from this consolidated view. For those moments when you need to prioritize important messages, the smart inbox feature is designed to highlight the emails that matter most. This ensures that you never miss critical communications while managing your daily workflow effectively.

Notion Mail is an innovative email platform powered by AI, designed to transform the traditional inbox with its sleek, customizable interface aimed at optimizing communication and boosting productivity. It offers seamless integration with Gmail, enabling users to organize their emails using AI-generated auto-labeling that sorts messages according to their content, such as job offers, travel confirmations, or newsletters. The platform allows the creation of personalized "Views" to filter emails by topics, senders, or urgency, which helps users concentrate on what truly matters. Additionally, it features Notion-style slash commands for easy formatting, built-in scheduling connected to Notion Calendar, and AI-enhanced email drafting to speed up responses. Users can take advantage of snippets that serve as reusable email templates, which significantly cuts down on repetitive writing tasks. Notion Mail also prioritizes security with stringent standards such as SOC 2 Type 1 certification and HIPAA compliance, ensuring that user data remains secure and confidential. This combination of features not only elevates user experience but also encourages a more organized approach to email management.

MailAI is an innovative email automation platform driven by AI that utilizes personal agents operating around the clock within secure, isolated environments to handle, respond to, and streamline your inbox and calendar workflows. These agents are capable of automatically replying to customer messages, tracking invoices through Stripe, arranging meeting times, compiling daily summaries of unread correspondence, and executing tailored tasks, all initiated by straightforward plain-English commands. Designed with enterprise-level data protection in mind, MailAI seamlessly integrates with essential tools such as Gmail, Google Calendar, and Stripe, allowing for interactive communication where users can instruct their agents with requests like “retrieve all emails from Sarah regarding the Q4 deadline” or “organize a check-in meeting and send out the invitation.” The platform boasts a suite of robust functionalities, including inbox management, task and invoice monitoring, customizable email templates, performance-driven workflows, and comprehensive compliance safeguards, ensuring a secure and efficient user experience. Additionally, it empowers users to reclaim valuable time by automating repetitive tasks, ultimately enhancing productivity and focus on strategic initiatives.

Clyton is an email client that offers advanced security and spam filtering capabilities. The spam filter can be configured to support DNS blacklist checking (DNSBL). The default configuration will eliminate 85% of spam. Mail that appears suspicious but is not spam is quarantined for 24hrs. The blacklist is then retested to ensure the blacklist has enough time to respond to new sources of spam. The integrated address book allows for personalized mass-mailings. Without your permission, email received cannot run scripts, download multimedia or use embedded objects. Other features include whitelisting, encrypted storage, whitelisting and attachment viewer. You can also drag and drop messages, create message templates and use SSL encryption.

Yahoo Mail offers a complimentary email service provided by Yahoo and features a mobile application designed for efficient email management. We appreciate your interest in the Yahoo Mail app, recognized as an excellent tool for organizing various email accounts, including Gmail, Microsoft Outlook, AOL, AT&T, and Yahoo itself. If you're looking for a streamlined inbox, enhanced personalization options, multiple displays for sorting deals, receipts, and attachments, or increased storage capacity, this app is equipped to meet your needs. With its user-friendly interface, managing your emails has never been easier or more efficient.

We digitize your US Postal Mail, allowing you to read it online from anywhere at any time with our comprehensive mail management service. VPM simplifies the way you handle your mail and packages, enabling you to concentrate on what truly matters in your life. With a permanent mailbox address provided by VirtualPostMail, you can receive your postal mail at a designated street address. Unopened envelopes are scanned for your convenience, letting you view your mail online whenever you wish. You have the flexibility to choose whether to have your mail opened and scanned, forwarded, or discarded. Once you experience the ease of managing your postal mail online, you’ll likely never return to traditional methods. Additionally, our Check Deposit feature allows you to deposit any checks you receive directly into your VirtualPostMail account without needing to visit a bank. When a check arrives in your mailbox, you can easily request a deposit into your bank account, streamlining your financial management process. This modern approach to mail handling not only saves time but also promotes efficiency in your daily routines.

Claws Mail serves as an email client and news reader built on the GTK+ framework, offering a responsive, elegant, and advanced interface alongside simple configuration, user-friendly operation, a wealth of features, and strong extensibility coupled with reliability and stability. Its design is intentionally crafted to be approachable for newcomers transitioning from other well-known email clients while still catering to the needs of seasoned users. Nearly all functions can be executed using keyboard shortcuts, significantly enhancing usability. The software handles messages using the conventional MH format, which ensures quick access and safeguards user data. You can easily import emails from virtually any email client, and the export process is equally straightforward. Additionally, various plugins enhance functionality with features like an RSS aggregator, calendar, and management of laptop LED indicators. Claws Mail is made available under the GPL license, encouraging community contribution and improvement. With its combination of powerful features and user-centric design, Claws Mail stands out as a versatile choice for email management.

Sylpheed is a versatile, lightweight e-mail client that combines an array of features with ease of use. It boasts an intuitive user interface, making it accessible for both novices and advanced users, especially as it supports keyboard-centric navigation. Compatible with various operating systems, including Windows, Linux, BSD, Mac OS X, and other Unix-like environments, Sylpheed utilizes the GTK+ GUI toolkit, with the latest version requiring GTK+ 2.4 or higher, and 2.6 or later being recommended for optimal performance. As free software released under the GNU GPL (with its library components under the GNU LGPL), users can freely utilize, modify, and share the application. Sylpheed features a user-friendly 3-pane layout reminiscent of popular Windows e-mail clients like Outlook Express and Becky, making it particularly approachable for first-time users. The ongoing enhancements to its user interface ensure that Sylpheed remains a comfortable and efficient tool for managing emails. Additionally, the consistent updates reflect a commitment to improving user experience and functionality.

Cybercriminals often employ forged emails to deceive both your customers and employees into revealing their login credentials. They may also send counterfeit invoices to your business partners and suppliers, creating further chaos. Additionally, these malicious actors distribute harmful emails that contain malware, such as ransomware, which can severely impact your organization. Furthermore, they utilize email spoofing techniques to sell illicit products, including weapons and drugs, while masquerading as reputable brands. To combat these threats, DMARC serves as an email validation protocol that hinges on two widely recognized authentication methods, SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail). SPF functions by allowing the recipient's mail server to verify whether the email sender's server is permitted to dispatch emails on behalf of the organization, thereby enhancing security. Meanwhile, DKIM employs a cryptographic method that utilizes both public and private keys to authenticate messages, ensuring their integrity during transmission from sender to recipient mail servers. Implementing these protocols is crucial in safeguarding against email-based attacks.

SquirrelMail is a webmail solution that adheres to standards and is developed using PHP. It offers native support for both IMAP and SMTP protocols entirely in PHP, ensuring that all its pages are displayed in pure HTML 4.0, which eliminates the requirement for JavaScript and enhances compatibility with various browsers. With minimal setup requirements, it is straightforward to configure and install. SquirrelMail provides a comprehensive range of features typical of any robust email client, such as excellent MIME support, an address book, and the ability to manage folders. Our organization recognized the necessity for global access to email and address books, making a web-based interface the most practical choice as long as users are connected to the Internet. After evaluating several open-source options, it became clear that significant customizations would be necessary to tailor the software to our specific requirements. This realization pushed us to prioritize flexibility and adaptability in our email solution.

500Mail is an email client software provided by 500apps. It is used by small businesses to access their emails quickly and keep their data safe. When you use 500Mail, you can add multiple domains to the same interface and access unlimited mailboxes for each of them. With 500Mail filters, users can keep their inbox organized by setting conditions and actions for emails that come in and emails that go out. People put their business names at the end of their emails so they can promote their business.

The Microsoft SMTP Service is a mail server software designed for Microsoft Windows Server operating systems, facilitating the sending and receiving of emails. As a component of Internet Information Services (IIS), it effectively relays emails between different mail servers, making it a favored choice for businesses seeking a dependable and scalable email server solution. Its installation and configuration are user-friendly, allowing compatibility with various email clients. Additionally, Microsoft SMTP Service offers several noteworthy features, such as the capability to relay emails across multiple domains, ensuring efficient communication. It supports numerous email clients including Microsoft Outlook, Mozilla Thunderbird, and Apple Mail, enhancing its versatility. Furthermore, security is a priority, as the service incorporates essential features like authentication and encryption, safeguarding email transmissions. Thus, organizations can trust Microsoft SMTP Service not only for its functionality but also for its robust security measures.

Combine social collaboration, messaging, and business applications into a unified workspace with HCL Notes. This email client software provides teams with essential tools such as email, calendar, and contact management, while also integrating various collaboration resources and HCL Domino business applications. With its enhanced user experience and improvements to critical mail functionalities, HCL Notes evolves your routine email usage into a central operational hub, becoming increasingly vital for your team's productivity. By integrating social collaboration, messaging, and business applications into one cohesive workspace, Notes enhances daily workflow significantly. Currently, leading logistics firms, influential banks, and fashionable brands depend on Notes to streamline their operations and improve efficiency in their everyday tasks. The versatility of HCL Notes makes it an indispensable tool for organizations seeking to optimize their collaborative efforts and communication strategies.

Global secure email access is essential, as everyone deserves the ability to communicate in privacy. Flow serves as the most secure email solution that seamlessly integrates with a variety of traditional email clients. Our free, open-source mail client, Volcano, fully utilizes the Dark Internet Mail Environment for enhanced security. For those looking to host their own private email service, Magma is our open-source server tailored for the Dark Internet Mail Environment. We are trailblazers in the realm of encrypted email, advocating for the fundamental right to private and secure communication for all individuals. By implementing robust end-to-end encryption standards and innovative technologies, we are transforming the landscape of digital communication and safeguarding personal privacy on a global scale. Our commitment to this cause ensures that the future of communication remains secure and accessible for everyone.